The surface area of as-prepared nanoparticles was found to be in the range of 64–157 m 2 g −1 . The dielectric constant was found to increase (27.2–89.5) whereas the dielectric loss was found to decrease (0.07–0.002) on increasing the Pb 2+ ion concentration (0.05–0.20), suggesting effective dielectric characteristics of synthesized nanoparticles. Suitable pore morphology and high temperature stability
摘要 采用反相微乳液法成功制备了Ba 1-x Pb x ZrO 3 (x = 0.05、0.10、0.15和0.20)单相纳米粒子。X 射线衍射研究证实了 (Ba,Pb)ZrO 3 单相固溶体中的晶格收缩。
TEM 研究表明,形成了粒径在 42-70 nm 范围内的多分散颗粒(球形、立方体和六边形)。发现所制备的纳米颗粒的表面积在 64-157 m 2 g -1 的范围内。发现介电常数增加 (27.2–89.5) 而发现介电损耗随着 Pb 2+ 离子浓度的增加 (0.05–0.20) 而减少 (0.07–0.002),表明合成纳米粒子的有效介电特性。合适的孔隙形态和高温稳定性使该材料成为开发电容式传感器的重要介质。观察到传感器的电容随着湿度的增加而增加,因为纳米颗粒可能适用于蒸汽感测应用。